The Steerage. Alfred Stieglitz. 1907 C.E. Photograph.
https://upload.wikimedia.org/wikipedia/commons/e/eb/Stieglitz-Steerage291.jpg
https://upload.wikimedia.org/wikipedia/commons/e/eb/Stieglitz-Steerage291.jpg

Excellent overview of Stieglitz's work from the Metropolitan Museum of Art:
http://www.metmuseum.org/toah/hd/stgp/hd_stgp.htm

related, in Stokstad 5th edition: p. 1036-1037

Good quotations from Stieglitz in this short article on this photograph from the Minneapolis Institute of Arts:
http://archive.artsmia.org/get-the-picture/stieglitz/frame08.html

Khan Academy article on this artwork: https://www.khanacademy.org/humanities/art-1010/art-between-wars/american-art-wwii/a/stieglitz-the-steerage

Incisive article on this artwork by Peter B. Harris, Professor of English and Creative Writing at Colby College, on Stieglitz's "self estrangement and his desire to heal, evade, or mediate it through art" and the idea that "photography, no less than literature, is a medium that invites everyone's projections and constructions."
http://college.cengage.com/english/heath/harris.htm